Analysis of advantages of reactive electric machines in propulsion system construction

The work considers various types of ship propulsion systems, their main advantages and disadvantages are given below. The advantages of an electric propulsion system based on an electric motor are described in this work. Various types of electric machines used in the construction of ship electrical propulsion systems are also considered. The choice of the reactive electric machine in ship propulsion systems was made. Various types of reactive electric machines and prospects of their use in the electric drive are considered; possible ways of their optimization (energy indicators, mass-dimensional characteristics) are shown. A comparative analysis of the reactive electric machines designs and their competitive advantages between themselves and the classic electric machines used in the electric drive is performed. Machines with different winding designs are considered, the longitudinal and transverse inductance ratios of the various types of motors are shown, which are the criterion for assessing the structure quality. The machines with a gear stator and a rotor are described in detail, the possibility of their optimization is proved by the criterion of a minimum of pulsations of the electromagnetic moment. A description is given for a synchronous reluctance machine with anisotropic magnetic conductivity of a rotor with longitudinal and transverse blending. The analysis of the energy characteristics and mass-dimensional parameters of reactive electric machines was made.